Panic when block is empty

[Ianwu0812]

Community Note

• Please vote on this issue by adding a 👍 reaction to the original issue to help the community and maintainers prioritize this request
• Please do not leave "+1" or "me too" comments, they generate extra noise for issue followers and do not help prioritize the request
• If you are interested in working on this issue or have submitted a pull request, please leave a comment

Terraform (and AzureRM Provider) Version

Terraform v0.12.2

• provider.azurerm v1.30.1

Affected Resource(s)

• azurerm_kubernetes_cluster

Terraform Configuration Files

# Copy-paste your Terraform configurations here - for large Terraform configs,
# please use a service like Dropbox and share a link to the ZIP file. For
# security, you can also encrypt the files using our GPG public key: https://keybase.io/hashicorp

provider "azurerm" {
}

resource "azurerm_resource_group" "rg1" {
    name     = "${var.names.rg}"
    location = "${var.location}"

    tags = {
        environment = "development"
    }
}
resource "azurerm_kubernetes_cluster" "cluster1" {
    name = "${var.names.aks}"
    location = "${var.location}"
    resource_group_name = "${var.names.rg}"
    dns_prefix          = "aks-dev"
    agent_pool_profile {
        name            = "default"
        count           = 2
        vm_size         = "Standard_D4s_v3"
        os_type         = "Linux"
        os_disk_size_gb = 30
    }
    service_principal {
        client_id     = "${var.client_id}"
        client_secret = "${var.client_secret}"
    addon_profile {
        #oms_agent {}
    }
    depends_on = [azurerm_resource_group.rg1]
}

Debug Output

Panic Output

panic: interface conversion: interface {} is nil, not map[string]interface {}

Expected Behavior

Show detailed message about invalid block, then user will know about what should do.

Actual Behavior

Just show the crash log

Steps to Reproduce

1. terraform apply

Yes, just apply the config I provided.

Important Factoids

References

It will occur panic error, fixed after delete block

addon_profile {
    #oms_agent {}
}

• #0000

[wasfree]

Hi @Ianwu0812,
i was running in same issue and worked around like this:

variables.tf

variable "http_application_routing_enabled" {
  description = "Enable or disable http_application_routing"
  default     = false
}

variable "oms_agent" {
  type        = list(map(string))
  description = "A oms_agent block support."
  default     = []
}

main.tf
[..]
  addon_profile {
    http_application_routing {
      enabled = var.http_application_routing_enabled
    }

    dynamic "oms_agent" {
      for_each = var.oms_agent
      content {
        enabled                    = lookup(oms_agent.value, "enabled", null)
        log_analytics_workspace_id = lookup(oms_agent.value, "log_analytics_workspace_id", null)
      }
    }
  }

So i use http_application_routing as placeholder in addon_profile which is default set to false. This will prevent crashing in case addon_profile is empty. I know this is not a great solution but just in case it is blocking you.

[Ianwu0812]

Hi @NickMetz,
Thanks for your advice, it's useful for me!

[tombuildsstuff]

Fixed via #4898

[ghost]

This has been released in version 1.37.0 of the provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading. As an example:

provider "azurerm" {
    version = "~> 1.37.0"
}
# ... other configuration ...

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 [email protected]. Thanks!